item = int(input('你需要第几项的斐波那契数列？'))
count = 0
a = 1
b = 1
count = 2
if item <= 0:
    print("请输入一个正整数")
elif item == 1:
    print("斐波那契数列：", b)
elif item == 2:
    print("斐波那契数列：", a, ",", b)
elif item > 2:
    print('斐波那契额数列：', a, ',', b)
    for i in range(item):
        if i < 2:
            continue
        c = a + b
        print(c)
        a = b
        b = c
input("111")
